Meet Zeus, a male Mastiff with cystinuria, owned by Nancy Bullock. Zeus has been switched to an all natural diet with adjustments made for his cystinuric condition, and is doing very well, as Nancy recently wrote in her update:

"I just wanted to write to let you know how things have been going. Thanks to your help, Zeus is doing great. We are still monitoring his urine for crystals and he has no crystals showing up. We will be doing another UA on Wednesday so we are hoping for the same results. I want to thank you for your help and the diet, I know it has saved my babies life."